MESO: Mesoscale Discussion 1958

ACUS11 KWNS 121926
SWOMCD
SPC MCD 121926
LAZ000-TXZ000-122100-

MESOSCALE DISCUSSION 1958
NWS STORM PREDICTION CENTER NORMAN OK
0226 PM CDT WED SEP 12 2007

AREAS AFFECTED...SW AND SCNTRL LA/SE TX

CONCERNING...HEAVY RAINFALL

VALID 121926Z - 122100Z

AS RAINBANDS ASSOCIATED WITH TROPICAL STORM HUMBERTO MOVE INLAND
THIS AFTERNOON...LOCALLY HEAVY RAINFALL WITH HOURLY RAINFALL RATES
UP TO 2 INCHES PER HOUR WILL BE LIKELY ACROSS PARTS OF SE TX AND SW
LA.

THE CENTER OF TROPICAL STORM HUMBERTO WILL CONTINUE TO APPROACH THE
SE TX COAST THIS AFTERNOON AND RADAR DEPICTION OF THE SYSTEM SHOW
INCREASING ORGANIZATION. SFC DEWPOINTS AHEAD OF THE SYSTEM ARE IN
THE LOWER 70S F AND OBJECTIVE ANALYSIS SUGGESTS PRECIPITABLE WATER
VALUES LOCALLY EXCEED 2.25 INCHES ACROSS PARTS OF FAR SE TX AND SW
LA. THIS WILL SUPPORT LOCALIZED VERY HEAVY RAINFALL WITH THE
STRONGER CELLS EMBEDDED IN THE OUTER RAINBANDS OF TROPICAL STORM
HUMBERTO. A TRAINING EFFECT APPEARS MOST LIKELY ACROSS SW AND SCNTRL
LA WHERE RAINBANDS ARE ORIENTED FROM SOUTHEAST TO NORTHWEST AND CELL
MOTIONS TO THE NORTH WILL CAUSE ENHANCED RAINFALL TOTALS.

.BROYLES.. 09/12/2007

..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...JAN...LIX...LCH...SHV...HGX...

29989267 29789349 29679405 29639449 29829493 30519507
31009440 31379315 31419221 31189178 30749153 30369161
30099194

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